<b>Reproductive status of <em>Menticirrhus americanus</em> (Teleostei, Sciaenidae) in fisheries performed on the Southern coast of Brazil</b> - DOI: 10.4025/actascibiolsci.v30i4.1230

  • Elneison da Rosa Muniz UFPR
  • Paulo de Tarso Chaves UFPR
Keywords: breeding, fish, management, fishing

Abstract

Fisheries rules usually take into account the life cycle of target species. But as these species differ, multi-specific fisheries prove difficult to be managed. In the southern coast of Brazil (26°00’S, 48°36’W), an annual closed fishing season is exclusive to trawling only, which target species such as the shrimp Xyphopenaeus kroyeri . In this region, the consequences of trawling and gillnets on the life cycles of fish remain unknown. The present work has surveyed the incidence of small-scale fisheries on the reproductive cycle of the Sciaenidae Menticirrhus americanus. Landings were sampled in 2006 and 2007, and sexual ratio, seasonal distribution of gonadal stages, gonadossomatic index and length at first maturity were estimated. Catches of reproductive individuals were analyzed according to the fishing season and fishing gears employed. Resultes showed that catches of Menticirrhus americanus include, at least during two seasons per year, individuals in breeding activity. Trawling does not catch maturing, mature or ripe specimens; gillnets of the caceio type act mainly on young and maturing individuals; and gillnets of the fundeio type act mainly on mature and ripe individuals, in spring and summer.

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Author Biographies

Elneison da Rosa Muniz, UFPR
Departamento de Zoologia, área Ictiologia.
Paulo de Tarso Chaves, UFPR
Departamento de Zoologia, Universidade Federal do Paraná. Área: Ictiologia.
Published
2008-11-26
How to Cite
Muniz, E. da R., & Chaves, P. de T. (2008). <b>Reproductive status of <em>Menticirrhus americanus</em> (Teleostei, Sciaenidae) in fisheries performed on the Southern coast of Brazil</b&gt; - DOI: 10.4025/actascibiolsci.v30i4.1230. Acta Scientiarum. Biological Sciences, 30(4), 339-344. https://doi.org/10.4025/actascibiolsci.v30i4.1230
Section
Aquiculture and Fisheries Resources

 

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0.6
2019CiteScore
 
 
31st percentile
Powered by  Scopus